Polishing-machine.



No. 834,421. PATENTED 00130, 1906.

0; TVBRDAHL. POLISHING MACHINE.

APPLIOATION FILED OGT. 4, 1905.

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POLISHING MACHINE.

APPL IOATION FILED 0012.4, 1906.

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POLISHING MACHINE.

APPLICATION FILED 00124, 1905.

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- INVE TOR No. 834,421.' PATENTED 001'. so, 1966.

' 0.|TVERDAHL.

POLISHING MACHINE.

APPLICATION FILED 0O'1. 4, 1905.

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OLE TVERDAHL, OF COSHOOTON. OHIO. ASSIGNOR OF ONF-HALF TO THOMAS J. RITTENHOUSE AND ONE-FOURTH TO J. HAIDET, OF

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POLISHING-MACHINE.

Specification of Letters Patent.

Patented Oct. 30, 1906.

Application filed October 4, 1905. Serial No. 281,298.

To all whom it may concern.-

Be it known that I, OLE TVERDAHL, a-citizen of the United States, residing at Coshocton, .in the county of Coshocton and State of Ohio, have invented new and useful Improvements in Polishing-Machines, of which the following is a specification.

This invention is a machine for polishing I metal articles, particularly constructed and adapted for polishing the edges of sad-irons,

although capable of adaptation for polishing stove-trimmings,castings of various kinds,

and metal articles generally. It is illustrated as embodying appliances for polishing sad-irons.

'llhe object of the invention is to produce an improved device of the kind embodying track under the wheels.

. vation. Figs. 4 and 5 are details of the trip -mechan1sm for advancing the carriages.

Figs. .6 and 7 are details in side elevation and.

:top plan view of one of the carriages with oscillating holders. Figs. 8 and 9 are partial front and rear elevations showing revolving holders mounted in the carriages. Fig. 10'is a central vertical cross-section of. the carriage and holder shown in Figs. 6 and 7.

The frame'of the machine consists of a long narrow bed .6, mounted upon legs 7. Mounted upon this-bed are tracks 8, which are spaced apart,*andextending lengthwise of .the machine, .under'the tracks, is a rod 9,

whichg-bymeans'to be hereinafter described,

isflreciprocatedpin the hearings or guides on the frame-by; which it issupported. Lo- ;cated'abov e the track and overhanging the saine'is a1row of polishing-Wheels 1-0. Each of. these wheels is mounted upon a post 11, which-fitsin a socket 12', mounted upon the frame 6-. .The socket is split, so that the post may be turned and raised or lowered therein ,and clamped atadjustme'nt by bolts 1 3. The

wheels are advantageous 13 disposed at an angle to the track, so as not to interfere with each other. It will be seen in Fig. 1 that the row of wheels is divided into two sections, six in each, with a break. thcrebetwcen. This is. for the purpose of allowing the sad-irons to be reverscdor put in the other edge up between the sections, one edge of the irons being polished by one. section and the other edge by the next section.

The carriages which carry the sad-irons slide one behind the other on-the tracks 8. A carriage is illustrated in detail in Figs. 6 and 7 and consists of a frame having side bars 14, which rest and travel upon therespective tracks, and these bars are connected at the ends by arched pieces 15. The pieces are arched so that the sad-iron holders may swing thereunder. Mounted upon each side bar ,14 is a pair of bearing-plates 16, each of which has a bearing 17 for the rock-shaft 18 of the sad-iron holder. Each bearing-plate 16 has a-raised portion 19 at the outer end, under which is a coiled spring 20, which lifts said bearing-plate to the extent permitted by the stop-nut 21 on the bolt 22, which projects upwardly from the bar 14 through a hole in the bearing-plate. The plate is loosely fastened at the otherend by a bolt and nut 23.

' Each carriage contains a pair of holders.

Oscillating holders are shown in Flgs. 6 and 7. Each of these consists of a pair of bars 24 and 25, connected by a sleeve26, which is sleeved over the shaft 18, above referred to.

One of these bars terminates at theupper end in. a plate '27, which is of substantially Between thelower ends of the bars 24 and '25 YVhen so constructed and mounted, each holder is at liberty to oscillateon its shaft;-

and'its supporting-bearings are also cushioned by the springs 20, so that a limited yielding up-ahd-down motion is permitted. Th s causes the-sad-irons to be-pressed against the pohshmg-wheelsw1th a yielding the same shape as the back of a sad-iron. The other arm projects upwardly opposite said plate and is provided with a screw 28, which may be clamped against the sad-iron.

. is journaled a roller 29, and the holder is nor-. 'mally held in vertical position by a spring 30, connected between the shaft of the roller 29 "and a'lug on the under sideof the fra'me 14.

holder.

pressure and also accommodates the irons to small differences in the diameterof the wheels.

When the carriages are mounted on the tracks, the lower ends of the holders han down with the rollers 29 just above the ro 9. Said rodis provided with pairs of upwardly-projecting lugs 31, which are located the same distance apart as the polishingwheels and directly under the axes thereof. Each pair of lugs is adapted to receive therebetween a roller 29 at the .lower end of a The lugs are beveled on one side, as at 32, so that the rollers ma ride up the same, as the carriages are intermittently moved along and drop into the space between the lugs when the reciprocation of the rod 9 causes the holders to swing back and forth with the sad-irons in contact with the polishing-wheels until the next movement of the carria es.

To ro rice the reciprocation of the rod 9, a sha t 33 is driven by belt and pulley from any suitable source and has at the front of the machine crank-disk 34, connected by a -rod 35 to an arm 36 on a rock-shaft 37, which has an arm 38 connected b a head 39 to the rod 9. Rotation of the s aft 33 rocksthe shaft 37 and the arm 38 carries the rod 9 'back and forth and swings the holders by the means above described.

To produce an intermittent advance of the carriages, a rod 40 is connected at one end to and swings with the arm 36, and at the other end to a pawl 41, arranged to engage a ratchet-wheel 42. This ratchet-wheel has on its inner side a cam 43 with a notch 44.'

45 indicates a lever which is pivoted at 46 to one of the tracks 8 and extends along beside said track and beside theratchet 42. It has a pin 47, which is normally pressed up by the cam 43, but which will drop in the notch The head of this trip is arranged to engage a .50

pin 52,- rojecting from a pivot-plate 53, which is ged at 54 to the top of the block 51 and at its front end is arranged to hit or miss a pusher-frame 55. Under the plate 53 is a spring 56, tending to lift the same. The pusher-frame 55 rests upon the tracks 8 and as ahandle 57, whereby it may be retracted. Normally the cam 43 lifts the lever 45, which by its contact against the lug 48 swings the trip 50 forwardly, so that its curved head engages over the pin 52 and bears down thereon, confining theplate 53 against the top of the block 51, so that when the rod 9 advances the plate 53 misses and slides under the frame 55, and consequently does notmove said framejbut when the notch 44 reaches the pin 47 said pin dro s into the notch, allowing the lever 45 to ro and it hits the lug 49 and lifts the head 0' the tri 50, releasing same from the pin 52. This a lows the plate 53 to lift in consequence of the spring thereunder, and When the rod 9 then advances, the plate 53 strikes the pusherframe, and said frame, being at its front end against the last carriage, is advanced and pushes the carriages along one step, or from one wheel to the next. slides back, the pin 47 rides up on the cam 43 and again engages the trip and presses down the plate 53. The pusher-frame 55 is retracted by hand and another carriage is put in place. Necessarily the track must he kept full of carriages in order to operate it. As fast as one carriage is pushed off the rear end of the machine it is brought around to the head thereof and put in place in front of the pusher-frame.

In operation the sad-irons are put in place against the plates 27 and clamped by the screws 28. The carriages are then placed on the tracks and are advanced by the means above described. They stop with one of the holders under each wheel, and the irons held by these holders are in contact with the wheels and are polished thereby, and by When the rod 9- means of the oscillation of the holders, produced by the reciprocation of the rod 9, all

parts of the ed e on one side are presented to the wheels. aNhen the carriages reach the break between the first and second sections of the row of polishing-wheels, the sad-irons areunelamped and turned over, so that the other edge will be polished by the next section. 'Obviously by varying the shape of the holders articles of other kinds may be worked on.

In the modification shown in Figs. 8 and 9 rotary holders are disclosed instead of oscillating holders. The carriages are substantially the same, except that the plates 16 instead of having closed bearings 17 have open bearings 17, which receive a shaft 18". Mounted on this shaft is a disk 27, against which the sad-irons are clam ed by a spider 28, sleeved on the shaft. T e disk 27 will hold three irons. The shaft 18 has on its rear end a pinion 60, which hangs out beyond the track in position to mesh with pinions 61, driven by intermediate earing from a long shaft 62, which extends a ong the rear edge of the track, so as to drive all the holders. 6

It will be noticed that with the modified form of holder, as with the original, the parts are sprin -sup orted, so that a yielding pressure is e ecte against the polishing-wheels. The disks 27, ca ing the irons, are caused to rotate under e ah wheel b the means described, and the edges of t e irons carried thereby are polished.

The scope of the invention is not limited to the exact construction shown, since it is obsurface of the article to the whee hold an article against ,the wheel, and means. to rock the holder, to present different parts-- older to present di erent vious that changes may be made within the spirit of the invention-and within the scope of the following claims.

What I "laim as new, and desire to secure by Letters Patent, is e 1. In a polishing-machine, the'-combina-' tion with a wheel, and m'eansto vary the angle and elevation thereof, of a holder supported thereunder and arranged to hold an article against the wheel,gand means? to turn the holder, to present different arts 'of the 2. In a polishing-machine, the combination with a series of wheels, of a series of holders movable thereunder and arranged to of the surface of the article to the wheel.

3, In a polishing-machine, the combination with a polishing-wheel, of a carriage slidable thereunder, an article-holder spring-su ported on the .car'ria e, and means to turn t e parts of the article to thewheel. I I

' 4. In a polishing-machine, the combine,- tion with" a track and a row of polishing- ,wheels over the same, of a pluralit of carriages having article-holders, movab e on the I track from one wheel to the next, and means to turn the holders when they are under the:

wheels to present different parts of the surface of the articles to the wheels.

'5. In a polishing-machine, the combination with a track and a row of polishing: wheels over the same, of a plurality of car riages movable on the track, swinging holders carried by the carriages, and a reci rocating rod having projections engageab e with the holders, to swing the same. 1

6. In a polishing-machine, the combination with atrack and a row of. polishingwheels overthe same, of-a plurality of carriages movable on the track, swinging holders carried by the carriages, a reciproeating rod; having projections engageable with the holders, to swing'the same, and having means to.

intermittently advance the carriages. Y

7. In a polishing-machine, a work-carriage com rising a frame, bearing-plates springs'upported thereon, and article-holders mounted in bearings 8. In a polishing-machine, a work-carriage comprising a frame, bearing-plates s ringsupported thereon, and a swinging which hangs through the frame on a rockshaft mounted in the bearings and has a clamp at the top for attaching the article to be polished.

9.In a polishing-machine, the combination with a track and a row of polishingwheels over the same, of a plurality of car riages movable along the track, swinging holders hanging in the carriages and having clamps at the upper end for the articles,and depending at the lower 'ends below the car-- riages and a reciprocating rod below the track having means to engage the lower ends of .the holders and swingthe same.

10. In a polishing-machine, the combination with a track and a row of polishing wheels over the same, of carriages movab 0 along the track and carrying article-holders, a sliding pusher at the head of the track, be-

on said plates and arranged to turn therein. I

older hind the carriages, andmeans to intermit-' tently' advance the pusher.

11. In a polishing-machine, the combination with a track-and a row of polishingwheels thereoger, of carriages movable along the track and carrying swinging -article-' holders, a sliding pusher at. the head of the track behind the carriages, a reciprocating rod along the track, having means to engage the holders, to swing the same, and a tri plate carried by said rod and engageab ,e with the pusher to advance the same, and

means to intermittently engage the trip-plate with the pusher.

In testimony whereof. I have signed my name to this specificationin the presence of .two subscribing witnesses. p

' a OLE TVERDAHL.

Witnesses: g --CHABLES B. H NT MARI M, HUNT. 

